Based of the study on the impact of protoplasts under different conditions of enzymolysis solution, culture time, enzymolysis time and enzymolysis temperature in sequence using orthogonal test. The best optimal condition of producing protoplast was :0.5% helicase add 0.5% lysozyme and 1.0% cellulase, enzymolysis time was 3 hours , enzymolysis temperature was 32℃,under these condition the production of protoplast can be 4.25?10~(6 )per mL. Ca~(2+) and PEG can increase the regeneration ratio of protoplast.After induced mutation by complex factor under DES,UV and LiCl,the mutagenesis strain which own increasing enzyme activity and transmissibility steaty was obtained.

Objective]To observe the effect of abdominal acupuncture combined with body acupuncture on chloasma of stagnation of the liver-type. [Method] 30 patients were randomized into treatment group and control group, 15 in each. Treatment group were given abdominal needle combining acupuncture treatment, control group were only given acupuncture treatment. Each group were treated once a day, 5 times made a course, after each course had a rest for 2 days. After 4 courses, to observe the effect and the skin color score, and area score and declined index. [Results]After treatment, the two groups were effective, but the treatment group was more obvious, and scores difference compared with the control group was statistically significant(P<0.01). The total effective rate was 93.3% in the treatment group 86.67% in the control group, there was a significant difference between the two groups(P<0.05). [Conclusion]Abdominal hepatic stagnation type treated by acupuncture combined with body acupuncture on chloasma treatment, no pain or abdominal pain to a lesser degree, even more easily accepted by patients, is better than body acupuncture.

Objective To assess the effects of hydrocortisone (HC) on brain injury in septic shock rats induced by lipopolysaccharide (LPS).Methods Pathogen-free Wistar male rats were chosen to produce septic shock model by injection of LPS (Escherichia coil,O55:B5),25 mg/kg LPS was given by femoral vein.All rats in accordance with the random number table,were randomly divided into 3 groups:normal control group,LPS group,and low dose of HC group (HC 5 mg/kg).Every group had ten rats.Six hours after the septic shock model was established,the blood sample and brain tissue were collected to perform histopathological examination and measure the serum level of neuron specific enolase (NSE).Results The serum level of NSE,brain water content,inflammation score,neural damage score,vascular reaction score in LPS group were significantly higher than those in control group [(10.078 ± 0.526) μg/L vs.(3.719 ± 0.602) μg/L,(82.328 ±0.011) ％ vs.(78.896 ±0.005) ％,(2.750 ±0.463) scores vs.(0.125 ±0.345) scores,(2.875 ± 0.353) scores vs.(1.125 ± 0.354) scores,(2.875 ± 0.463) scores vs.(0.500 ± 0.534) scores,P ＜ 0.01,respectively].After HC treatment,the serum level of NSE,brain water content,and brain tissue pathological score [(6.297 ± 1.393) μg/L,(80.283 ± 0.005) ％,(0.625 ± 0.744) scores,(1.375 ± 0.744) scores,(1.250 ± 0.463) scores] were significantly lower than those in LPS group (P ＜ 0.05,respectively).Conclusion After giving low dose of HC,the serum level of NSE,brain edema,brain pathological changes all got improvement,which indicated that low dose HC could have protect effect on septic encephalopathy induced by LPS.

BACKGROUND:It is confirmed that the onset of osteoarthritis is closely related to inflammatory cytokines. OBJECTIVE: To investigate the levels of interleukin-6 and matrix metaloproteinase-3 in the synovial fluid of patients with osteoarthritis and their correlation with the severity of osteoarthritis. METHODS: Synovial fluid specimens of 78 patients were harvested to detect the levels of interleukin-6 and matrix metaloproteinase-3 using ELISA assay. The severity of osteoarthritis was estimated by the Hospital for Special Surgery (HSS) score. Pearson correlation analysis was adopted to explore the pairwise correlations between interleukin-6, matrix metaloproteinase-3 and HSS score. RESULTS AND CONCLUSION:The levels of interleukin-6 and matrix metaloproteinase-3 in the synovial fluid were (13.1±5.7) and (989.3±429.5) μg/L, respectively; the HSS score was (56.4±12.0) points. Pearson correlation analysis showed that the expression levels of interleukin-6 and matrix metaloproteinase-3 had a significant positive correlation (r=0.70,P< 0.001); the levels of interleukin-6 and matrix metaloproteinase-3 had a negative correlation with the HSS scores (r=-0.70,r=-0.75,P < 0.001). Experimental findings show that there is a positive correlation between interleukin-6 and matrix metaloproteinase-3 in the synovial fluids, and these two cytokines also have a positive correlation with the severity of osteoarthritis, indicating that to measure interleukin-6 and matrix metaloproteinase-3 levels in the synovial fluids of osteoarthritis patients is important for early diagnosis and treatment of osteoarthritis.

BACKGROUND:Studies have found that bone marrow mesenchymal stem cel s, under certain conditions, can be induced to differentiate into neurons and glial cel s, which to some extent solves the problem of the source of seed cel s. Induction methods currently used are different, and their efficiencies are not the same.
OBJECTIVE:To observe the effects of different antioxidants on differentiation of rat bone marrow mesenchymal stem cel s into neuron-like cel s in vitro.
METHODS:Bone marrow mesenchymal stem cel s from Wistar rats were divided into four groups:non-intervention group,β-mercaptoethanol group, retinoic acid group,β-mercaptoethanol+retinoic acid group. Changes in cel morphology and positive rate of neuron-specific enolase and microtubule-associated protein 2 were observed and detected at 5 hours, 12 hours, 1 day, 3 days, 5 days, 7 days, and 10 days after induction.
RESULTS AND CONCLUSION:Except non-intervention group, bone marrow mesenchymal stem cel s in the other three groups were gradual y becoming spindle-shaped, and gave birth to many smal protrusions that were interconnected into a network, showing neuron-like cel morphology. Immunocytochemical staining showed that the efficiency of theβ-mercaptoethanol+retinoic acid group was the highest at 10 days after induction, and the positive rates of neuron-specific enolase and microtubule-associated protein 2 were 71.63%and 79.72%, respectively. The results show thatβ-mercaptoethanol can be combined with retinoic acid to accelerate the differentiation of bone marrow mesenchymal stem cel s into neuron-like cel s.

Objective: To find the reason of risk on medical equipment. Methods: Based on RCA, to adopt the event classification to evaluate the X-ray equipment, high-frequency electro tome, electro-cardiac monitor, infusion pump, ventilator, defibrillators and infant incubator, discuss the root cause of medical risk. Results:To deduce the medical equipment risk by PM and quality control. Conclusion:With the analysis of quality control, the application of RCA is gradually explained in management of medical equipment.

Objectives To develop and evaluate a real-time fluorescent quantitative RT-PCR method for the detection of a novel CXC chemokine macrophage inflammatory protein-2?(MIP-2?)mRNA expression based on TaqMan technique.Method The expression of MIP-2? mRNA was detected by TaqMan real time fluorscet quantitative RT-PCR. Results The dynamic range of the assay varied from 102 to 107 copies. The intra- and inter-assay coefficient variation (CV) were less than

In our university,the training for geriatric postgraduates of clinical medicine is now in the initial stage.Therefore,it is important to explore the training model to improve the quality of postgraduate.The program focused on cultivating geriatric postgraduates' ability of diagnosis and treatment,helping them have the concept of integral service and enhancing their teaching and thinking ability of clinical sciences to provide high-level comprehensive geriatric doctors for the society.

Ras is a kind of protein closely related to neoplasms,the persistent activation of which would induce tumorigenesis and progression.RASAL1 is a Ca~(2+) regulated ras GTPase-activating-like protein, the loss or decreased expression of RASAL1 induces ras activation, then results in tumongenesis and progression.In this review we sum up the mechanism of ras activation, the relationship between neoplasms and RASAL1 and the mechanism of RASAL1 expression decreasing.

Objective To investigate the distribution of intramuscular nerves in the different skeletal muscles of the rabbit. Methods Muscle architecture and modified sihler's neural staining methods were used. Results The nerve branches of innervating flat M.pectoralis major arose from the anterior pectoral and posterior pectoral nerve.The former innervated cross fibers mainly,it penetrated the middle of muscle belly and formed a “U-Shaped” nerve ansa.The latter innervated oblique fibers mainly.There were many anastomoses between them.The nerve of pennate M.plantaris derived from tibial nerve.After entering muscle,the nerve trunk gradually divided into many primary branches toward medial and lateral fibers,these branches then subdivided into numerous arboroid second and terminal branches toward all of muscle fibres;The nerve of innervating spindle M.extensor digitorum longus came from N.fibularis communis.Two extramuscular nerve trunk were seen.Superior trunk mainly innervated those muscle fibers of inserting in the second toe,Inferior one mainly distributed to the fibers of rest within this muscle.Conclusion The spatial arrangement of the muscle fibres were related to distribution of the intramuscular nerves;Walking of intramuscular nerve branches had two patterns which run perpendicular and/or parallel to muscle fasciculi.